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		<title>ONIX Code List 147 [Issue 20]</title><style type="text/css">
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		<div class="listHeading">ONIX Code Lists Issue 20, January 2013<br>List 147: Unit of usage
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		<table width="100%">
			<tr>
				<td colspan="3">
					<hr>
				</td>
			</tr>
			<tr align="left">
				<th width="10%">Value</th>
				<th width="30%">Description</th>
				<th width="60%">Notes</th>
			</tr>
			<tr>
				<td colspan="3">
					<hr>
				</td>
			</tr>
			<tr valign="top">
				<td>01</td>
				<td>Copies</td>
				<td>Maximum number of copies that may be made of a permitted extract.</td>
			</tr>
			<tr valign="top">
				<td>02</td>
				<td>Characters</td>
				<td>Maximum number of characters in a permitted extract for a specified usage.</td>
			</tr>
			<tr valign="top">
				<td>03</td>
				<td>Words</td>
				<td>Maximum number of words in a permitted extract for a specified usage.</td>
			</tr>
			<tr valign="top">
				<td>04</td>
				<td>Pages</td>
				<td>Maximum number of pages in a permitted extract for a specified usage.</td>
			</tr>
			<tr valign="top">
				<td>05</td>
				<td>Percentage</td>
				<td>Maximum percentage of total content in a permitted extract for a specified usage.</td>
			</tr>
			<tr valign="top">
				<td>06</td>
				<td>Devices</td>
				<td>Maximum number of devices in &#8216;share group&#8217;.</td>
			</tr>
			<tr valign="top">
				<td>07</td>
				<td>Concurrent users</td>
				<td>Maximum number of concurrent users. NB where the number of concurrent users is specifically not limited, set the number of
					concurrent users to zero.
				</td>
			</tr>
			<tr valign="top">
				<td>08</td>
				<td>Percentage per time period</td>
				<td>Maximum percentage of total content which may be used in a specified usage per time period; the time period being specified
					as another EpubUsageQuantity.
				</td>
			</tr>
			<tr valign="top">
				<td>09</td>
				<td>Days</td>
				<td>Maximum time period in days.</td>
			</tr>
			<tr valign="top">
				<td>13</td>
				<td>Weeks</td>
				<td>Maximum time period in weeks.</td>
			</tr>
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				<td>14</td>
				<td>Months</td>
				<td>Maximum time period in months.</td>
			</tr>
			<tr valign="top">
				<td>10</td>
				<td>Times</td>
				<td>Maximum number of times a specified usage may occur.</td>
			</tr>
			<tr valign="top">
				<td>11</td>
				<td>Allowed usage start page</td>
				<td>Page number where allowed usage begins. &lt;Quantity&gt; should contain an absolute page number, counting the cover as page 1. (This
					type of page numbering should not be used where the e-publication has no fixed pagination). Use with (max number of) Pages,
					Percentage of content, or End page to specify pages allowed in Preview.
				</td>
			</tr>
			<tr valign="top">
				<td>12</td>
				<td>Allowed usage end page</td>
				<td>Page number at which allowed usage ends. &lt;Quantity&gt; should contain an absolute page number, counting the cover as page 1.
					(This type of page numbering should not be used where the e-publication has no fixed pagination). Use with Start page to specify
					pages allowed in a preview.
				</td>
			</tr>
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				</td>
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